在林业规划、资源清查和科研工作中,样地调查是不可缺少的一项基础工作。样地有模拟、可变和不可变三种,论形状有带状、方形、矩形和园形之分。带状、方形和矩形样地都要用罗盘仪测量周界,才能每木检尺。而园形、模拟和可变样地则不用仪器测量即可进行工作。采用园形样地进行测树工作,操作方便,容易掌握,使用工具少,工效高,而质量也不亚于其 In forestry planning, resource inventory and scientific research, sample surveys are an indispensable basic work. Sample simulation, variable and immutable three, on the shape of a ribbon, square, rectangular and garden of the points. Strip, square and rectangular plots to measure the perimeter with a compass to each wooden ruler. Park-shaped, analog and variable samples can be measured without instrumentation. The use of garden plots for tree measurement, easy to operate, easy to grasp, use less tools, high efficiency, but the quality is no less than its